5cee709266
When running in parallel mode, ngcc spawns multiple worker processed to process the various entry-points. The number of max allowed processes is determined by the number of CPU cores available to the OS. There is also currently an [upper limit of 8][1]. The number of active workers is in turn inferred by the number of [task assignments][2]. In the past, counting the entries of `ClusterMaster#taskAssignments` was enough, because worker processes were spawned eagerly at the beginning and corresponding entries were created in `taskAssignments`. Since #35719 however, worker processes are spawned lazily on an as needed basis. Because there is some delay between [spawning a process][3] and [inserting it][4] into `taskAssignments`, there is a short period of time when `taskAssignment.size` does not actually represent the number of spawned processes. This can result in spawning more than `ClusterMaster#workerCount` processes. An example of this can be seen in #36278, where the debug logs indicate 9 worker processes had been spawned (`All 9 workers are currently busy`) despite the hard limit of 8. This commit fixes this by using `cluster.workers` to compute the number of spawned worker processes. `cluster.workers` is updated synchronously with `cluster.fork()` and thus reflects the number of spawned workers accurately at all times. [1]: https://github.com/angular/angular/blob/b8e9a30d3b6/packages/compiler-cli/ngcc/src/main.ts#L429 [2]: https://github.com/angular/angular/blob/b8e9a30d3b6/packages/compiler-cli/ngcc/src/execution/cluster/master.ts#L108 [3]: https://github.com/angular/angular/blob/b8e9a30d3b6/packages/compiler-cli/ngcc/src/execution/cluster/master.ts#L110 [4]: https://github.com/angular/angular/blob/b8e9a30d3b6/packages/compiler-cli/ngcc/src/execution/cluster/master.ts#L199 PR Close #36280
Angular
The sources for this package are in the main Angular repo. Please file issues and pull requests against that repo.
Usage information and reference details can be found in Angular documentation.
License: MIT